How to Deselect all radiobuttonlist in JS

I have radiobuttonlist in which there is 3 items.
I have checkboxlist in which there is 5 items.
I have a button.
I want to unselect all the selected check boxes in the list when the button is clicked.
And I want to unselect the selected radiobutton in the radiobuttonlist.
How can I do this in JS
Pls help..